Hello Members,
I have developed and built a straightline tracking tone arm for record players. It is driven by a stepper motor which receives it's step rate from the amplified output of an analog Hall Effect device. I have a circuit diagram that a friend designed for me in the nineties. I had no time to work on this project until recently when I retired. Over the years some of the information my friend provided got corrupted so that when I breadboarded the design recenly, it didn't work. I always thought my friend a genius but I've lost contact so that I can't ask him.
I've been around electronics all my professional life but I've never learned to design circuits myself. I used to tape PCB artwork in the seventies but most of my work was mechanical design.
I don't know if it is appropriate to offer compensation for help in designing the circuit I need, but I can offer precision machining and 3D solid modelling in return.
Sincerely,
Ralf
I have developed and built a straightline tracking tone arm for record players. It is driven by a stepper motor which receives it's step rate from the amplified output of an analog Hall Effect device. I have a circuit diagram that a friend designed for me in the nineties. I had no time to work on this project until recently when I retired. Over the years some of the information my friend provided got corrupted so that when I breadboarded the design recenly, it didn't work. I always thought my friend a genius but I've lost contact so that I can't ask him.
I've been around electronics all my professional life but I've never learned to design circuits myself. I used to tape PCB artwork in the seventies but most of my work was mechanical design.
I don't know if it is appropriate to offer compensation for help in designing the circuit I need, but I can offer precision machining and 3D solid modelling in return.
Sincerely,
Ralf